I think there's a few other places in DisneyWorld for kids, but I'm not sure...
Do you know that Disney looks at that property as dollar signs, not your kid enjoying a car ride? There's gold in them there hills.
Just a simple question. If you had kids, I'm confident you wouldn't feel that the speedway is a "giant waste of space." Just my opinion of course, and also probably most parents...and kids. But hey, it's not a new screen based simulator based on a crap blockbuster, so chop it!